Search Results - "Zhuang, X.A."
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Measurements of the line shapes of DD¯ production and the ratio of the production rates of D+D− and D0D¯0 in e+e− annihilation at ψ(3770) resonance
Published in Physics letters. B (16-10-2008)“…We report measurements of the line shapes of D+D−, D0D¯0 and DD¯ production as well as the line shape of the ratio of the production rates of D+D− and D0D¯0 in…”
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2
Search for the rare decays J/ψ→Ds−π+, J/ψ→D−π+, and J/ψ→D¯0K¯0
Published in Physics letters. B (29-05-2008)“…Rare decay modes J/ψ→Ds−π++c.c., J/ψ→D−π++c.c., and J/ψ→D¯0K¯0+c.c. are searched for using 5.77×107J/ψ events collected with the BESII detector at the BEPC. No…”
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3
First observation of J/ψ and ψ(2S) decaying to nKS0Λ¯+c.c
Published in Physics letters. B (31-01-2008)“…The decays of J/ψ and ψ(2S) to nKS0Λ¯+c.c. are observed and measured for the first time, and the perturbative QCD “12%” rule is tested, based on 5.8×107J/ψ and…”
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4
Direct measurements of the cross sections for e+e−→hadrons|non-DD¯ in the range from 3.65 to 3.87 GeV and the branching fraction for ψ(3770)→non-DD
Published in Physics letters. B (17-01-2008)“…By tagging the largest energy of the assumed kaon in the final states of e+e−→hadrons, we measured the cross sections for e+e−→hadrons|non-DD¯ in the range…”
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5
Direct measurements of the branching fractions for inclusive K± and inclusive semileptonic decays of D+ and D0 mesons
Published in Physics letters. B (13-12-2007)“…With singly-tagged D¯ samples selected from the data collected at and around 3.773 GeV with the BESII detector at the BEPC collider, we have measured the…”
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6
Measurements of the observed cross sections for exclusive light hadron production in e+e− annihilation at s=3.773 and 3.650 GeV
Published in Physics letters. B (15-11-2007)“…By analyzing the data sets of 17.3 pb−1 taken at s=3.773 GeV and 6.5 pb−1 taken at s=3.650 GeV with the BESII detector at the BEPC collider, we have measured…”
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7
Measurements of the observed cross sections for e+e−→light hadrons at s=3.773 and 3.650 GeV
Published in Physics letters. B (28-06-2007)“…Using the data sets of 17.3 pb−1 collected at s=3.773 GeV and 6.5 pb−1 collected at s=3.650 GeV with the BESII detector at the BEPC collider, we have measured…”
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8
Direct measurement of the branching fraction for D + → K ¯ 0 μ + ν μ and determination of Γ ( D 0 → K − μ + ν μ ) / Γ ( D + → K ¯ 0 μ + ν μ )
Published in Physics letters. B (2007)“…The absolute branching fraction for the decay D + → K ¯ 0 μ + ν μ is determined using 5321 ± 149 ± 160 singly tagged D − sample from the data collected around…”
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9
Measurements of branching fractions for inclusive K¯0/K0 and K∗(892)∓ decays of neutral and charged D mesons
Published in Physics letters. B (21-12-2006)“…Using the data sample of about 33 pb−1 collected at and around 3.773 GeV with the BES-II detector at the BEPC collider, we have studied inclusive K¯0/K0 and…”
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10
Partial wave analyses of J/ψ→γπ+π− and γπ0π0
Published in Physics letters. B (23-11-2006)“…Results are presented on J/ψ radiative decays to π+π− and π0π0 based on a sample of 58M J/ψ events taken with the BES II detector. Partial wave analyses are…”
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11
Measurements of χcJ→K+K−K+K− decays
Published in Physics letters. B (09-11-2006)“…Using 14M ψ(2S) events taken with the BESII detector, χcJ→2(K+K−) decays are studied. For the four-kaon final state, the branching fractions are…”
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12
Measurements of the cross sections for e+e−→hadrons at 3.650, 3.6648, 3.773 GeV and the branching fraction for ψ(3770)→non-DD
Published in Physics letters. B (05-10-2006)“…Using the BES-II detector at the BEPC Collider, we measured the lowest order cross sections and the R values (R=σe+e−→hadrons0/σe+e−→μ+μ−0) for inclusive…”
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13
Search for the rare decays J/ψ→Ds−e+νe, J/ψ→D−e+νe, and J/ψ→D0¯e+e
Published in Physics letters. B (17-08-2006)“…We report on a search for the decays J/ψ→Ds−e+νe+c.c., J/ψ→D−e+νe+c.c., and J/ψ→D0¯e+e−+c.c. in a sample of 5.8×107J/ψ events collected with the BESII detector…”
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14
Evidence for κ meson production in J/ψ→K¯∗(892)0K+π− process
Published in Physics letters. B (23-02-2006)“…Based on 58 million BESII J/ψ events, the K¯∗(892)0K+π− channel in K+K−π+π− is studied. A clear low mass enhancement in the invariant mass spectrum of K+π− is…”
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15
Study of the J/ψ decays to ΛΛ¯ and Σ0Σ¯0
Published in Physics letters. B (12-01-2006)“…Using 58 million J/ψ events collected by the BES-II detector at the BEPC, the decays J/ψ→ΛΛ¯ and Σ0Σ¯0 are analysed. The branching fractions are measured to be…”
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16
Measurement of the cross section for e+e−→pp¯ at center-of-mass energies from 2.0 to 3.07 GeV
Published in Physics letters. B (01-12-2005)“…Cross sections for e+e−→pp¯ have been measured at 10 center-of-mass energies from 2.0 to 3.07 GeV by the BESII experiment at the BEPC, and proton…”
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17
Direct measurement of the cross sections for D 0 D ¯ 0 , D + D − and D D ¯ production by e + e − annihilation at the center-of-mass energy s = 3.773 GeV
Published in Nuclear physics. B (2005)“…The cross sections for D 0 D ¯ 0 , D + D − and D D ¯ production by e + e − annihilation at the center-of-mass energy s = 3.773 GeV have been directly measured…”
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